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A Maths Starter of The Day

Once you have completed the above challenge, can you then rearrange the numbers so the total of each side is now different to your first solution. How many ways can this be done?

 

 

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Keywords: Starter | Arithmetic | Investigations | Puzzles

  • Clue Giver,
  • Friday, June 19, 2009
  • "Easy! Clue: 1st triangle= 9, 2nd= 18."
  • Jules, Devon
  • Saturday, January 16, 2010
  • "Brilliant.Got 12 on each side on the first one, 21 on each side for the second. If the children get stuck tell them to use the highest three numbers on the corners, bit of jigging and it always works."
  • Kashyap, Mt Roskill Intermediate, Auckland
  • Tuesday, May 25, 2010
  • "Simple, either place the biggest three in the corners or the middle of the triangle, after that its easy."

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This starter has scored a mean of 3.7 out of 5 based on 46 votes.

 

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Answers

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23x2+7x-7

 
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